Once WebLogic 10.3.4 installed (with a default configuration), I executed the first command:

java -jar wljarbuilder.jar -profile weblogic-maven-plugin

But I got the following stacktrace:

Exception in thread "Main Thread" java.lang.NoClassDefFoundError: com/bea/jarbuilder/JarBuilder
Caused by: java.lang.ClassNotFoundException: com.bea.jarbuilder.JarBuilder
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:303)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
Could not find the main class: com.bea.jarbuilder.JarBuilder. Program will exit.

Trouble of paths

I opened the jar wljarbuilder.jar. I contains only a manifest, hinting a JAR and a runnable class: